<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>vue.js</title>
  <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>
<body>
  <div id="app">
    {{ message }}
  </div>
</body>
<script>
  var app = new Vue({
    el: document.getElementById('app'),
    data: {
      message: 'Hello Vue!'
    }
  })
</script>
</html>